Player Ghost Re-Add?

I liked the game better when you got knocked down your player would have a ghost effect which you knew you couldn't be damaged during that time. I think you should re add the feature it would be better for new players to learn that you cant damage them whule they are knocked down. New players don't know this feature that when you knock someone down you cant damage them and you can go for the kill while they are knocked down and you wouldnt be able to damamge them and they would be confused. Just an opinion, i fell new players would appreciate this feature